DIY: TV Repair After Lightening Strike LED LCD 4K Flat Screen

Welcome back, Tidewild Nation. Today we are looking at a TV repair. One of my friends' mothers lost all three of her TVs due to a lightning storm, so it gave me an opportunity to learn about the internal workings of a TV and figure out how to replace them. So I will show you today how to do that, but first I wanted to caution you that anytime you open your TV there's a great risk for a bad electronic shock. The electronic shock can be very dangerous as well as possibly even kill you, so make sure that you are not touching the metal parts when you're working inside, and if you are, make sure you're using gloves and a tool that is insulated. Please take care of yourself. If you're not comfortable doing it, take your TV to a repair shop. When working on a TV, you need to first diagnose the problem. This TV has no power whatsoever, no lights, no status light, no nothing. So we know that it was hit by lightning, and I think we have a pretty good idea which component is bad, but the first step is opening the TV. You can see that there are holes all along the top of the TV, down the sides, and across the bottom. You need to remove these screws as well as the screw in the power housing right here. When removing these screws at the bottom, these are what holds the stand in place. These bottom two do not have to be removed on this particular TV, but the top one does. So remove your screws to reveal the internal components of this TV. When looking for parts for a TV, it's always important to know the model number. It's usually found on the back of the TV, and you can see the model of this one is the E390-A1 from Vizio, but just check the back of your TV and look for the sticker. Once you have the back off the TV, you'll notice there are two circuit boards. This is your power board. Your power cord plugs in right here, and it's AC on this side of the board, and above the black line are your DC units. The other board is called your main board. This is the board that has all your ports to plug in your devices and your cable box or your satellite box, and each one of the boards has part numbers. So there's the part number, and you'll see it again. Another form of the part number that you sometimes need is on this white sticker. You can go to shopjimmy.com and type in the model number from your TV, and then look through the list of parts for the part number that you find on your main board. Order your main board and replace it. All you have to do is remove the cables the same way that they're plugged in. So there's one, two, ground, three, four cables, five cables, and then there's one, two, three, four screws. It's a simple process to remove this board and replace with the other one. Each of the cables has a small clip that you press in, and you simply pull the cable out. After you've detached the cables, remove the screws, and pull the board free from the TV. The set of TVs I'm working on all were hit by lightning. Doing some basic diagnostics, you can tell if it was the power board or the main board that went bad. If your TV was plugged into a surge protector and the surge protector is blown, or other devices connected to the surge protector are no longer working, then it's likely the power board. If your TV was plugged into cable or a satellite and the box that controls the TV was blown, you can assume that it's probably the main board. It could blow both boards, but it's not very likely. If you think the power surge came in through the power outlet, you can test this fuse right here. You can test this using a continuity tester if you would like to. There are other spots on the board that you can test to see if the correct voltage is leaving the board on the DC side up here at the top. Tampa Tech has some YouTube videos showing how to test these voltages. In my experience, if one of the boards is bad, it's easier to just replace the board unless you're skilled with soldering. As always, I appreciate you taking time to watch another one of my videos. If you found this video helpful, give me a thumbs up. It's right here under the screen. If you want to subscribe, you can either click the logo, which is either here or here, or you can click the subscribe button right down here. If you have any questions, please feel free to post them in the comments section below. Hope you guys have a great day. If you want to see a video showing how to replace your shower drain with common household tools, click the video in the top left. If you want to see some home hacks for marking holes when hanging odd objects with hangers on the back, click the video in the top right.